How to set all values in a single column MySQL Query?

To set all values in a single column MySQL query, you can use UPDATE command.

The syntax is as follows.

update yourTableName set yourColumnName =yourValue;

To understand the above syntax, let us create a table. The query to create a table is as follows.

mysql> create table setAllValuesDemo    -> (    -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    -> Name varchar(20),    -> Amount int    -> ); Query OK, 0 rows affected (0.64 sec)

Now you can insert some records in the table using insert command.

The query is as follows.

mysql> insert into setAllValuesDemo(Name,Amount) values('John',2345); Query OK, 1 row affected (0.22 sec) mysql> insert into setAllValuesDemo(Name,Amount) values('Carol',47586); Query OK, 1 row affected (0.13 sec) mysql> insert into setAllValuesDemo(Name,Amount) values('Bob',95686); Query OK, 1 row affected (0.15 sec) mysql> insert into setAllValuesDemo(Name,Amount) values('David',95667); Query OK, 1 row affected (0.15 sec)

Display all records from the table using select statement.

The query is as follows.

mysql> select *from setAllValuesDemo;

The following is the output.

+----+-------+--------+ | Id | Name | Amount | +----+-------+--------+ | 1 | John | 2345 | | 2 | Carol | 47586 | | 3 | Bob | 95686 | | 4 | David | 95667 | +----+-------+--------+ 4 rows in set (0.00 sec)

Here is the query to set all values in a single column MySQL query.

mysql> update setAllValuesDemo set Amount=10500; Query OK, 4 rows affected (0.20 sec) Rows matched: 4 Changed: 4 Warnings: 0

Now check the table records once again using select statement.

The query is as follows.

mysql> select *from setAllValuesDemo;

The following is the output.

+----+-------+--------+ | Id | Name | Amount | +----+-------+--------+ | 1 | John | 10500 | | 2 | Carol | 10500 | | 3 | Bob | 10500 | | 4 | David | 10500 | +----+-------+--------+ 4 rows in set (0.00 sec)